AP Biology 3.1.A Enzymes and Activation Energy

Practise AP Biology 3.1.A questions by explaining how enzyme structure, active-site compatibility and precursor cleavage affect biological reaction rates.

Exam points

explain that enzymes lower activation energy without changing reaction outcome
match active-site shape or charge with substrate specificity in enzyme catalysis
explain how precursor cleavage can activate an enzyme before a response

[Maximum number: 1]

Figure 1 shows the reactions of the metabolic pathway used to synthesize amino acid B from

amino acid A in cells.

Figure 1. Synthesis of amino acid B from amino acid A

Describe a characteristic of an enzyme's active site that allows it to catalyze a specific

chemical reaction.

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3.1.A—Explain how enzymes affect the rate of biological reactions question 1